logger

package

v0.2.0 Latest Latest Go to latest Published: May 15, 2026 License: MIT Imports: 5 Imported by: 0

Details

Package logger provides structured logging with levels.

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type Level int

Level represents a log level.

const (
	Debug Level = iota
	Info
	Warn
	Error
	Fatal
)

func (l Level) String() string

type Logger struct {
	// contains filtered or unexported fields
}

Logger is a structured logger.

func Default() *Logger

Default returns a default logger writing to stderr at Info level.

func New(output io.Writer, level Level) *Logger

New creates a new logger.

func (l *Logger) Debug(msg string, fields ...map[string]interface{})

Debug logs a debug message.

func (l *Logger) Error(msg string, fields ...map[string]interface{})

Error logs an error message.

func (l *Logger) Fatal(msg string, fields ...map[string]interface{})

Fatal logs a fatal message and exits.

func (l *Logger) Info(msg string, fields ...map[string]interface{})

Info logs an info message.

func (l *Logger) SetLevel(level Level)

SetLevel sets the minimum log level.

func (l *Logger) Warn(msg string, fields ...map[string]interface{})

Warn logs a warning message.

func (l *Logger) WithPrefix(prefix string) *Logger

WithPrefix returns a new logger with the given prefix.